Unit 0: Review Decimals and Fractions

Adding Decimals Rule: 3 6.203 .032 + 0.34 + ______ _______ When adding decimals, be sure to line up your place values. **You can't add tenths with hundreds** 3 6.203 + 0.34 ______ .032 + _______

4.9 21 + _____ _____ + 2.4 0.04 _____ + 1.2 0.2 0.0000002 1 + __________ .03 + 2 ______

Subtracting Decimals Rule: 3 6.203 - 0.34 ______ - .032 _______ When subtracting decimals, be sure to line up your place values. **You can't subtract tenths with hundreds** 3 6.203 - 0.34 ______ - .032 _______

2.3 4 9.4 - - .004 .03 _____ _____ - 5 ____

Multiplying Decimals Rule: 3.2 1.1 X 2.2 9 ______ _____ * When multiplying decimals, simply count how many decimal places were used and apply them to answer. **Don't forget your placeholder zeros when necessary** 3.2 1.1 X 2.2 9 ______ _____ *

100 .1 x ____ 32 .02 x ____ 1.2 0.4 x ____ 5.5 11 x ____

Dividing Decimals Rule: 2 2.4 0.3 2.4 When dividing with decimals, move your decimal point up directly from the Dividend to the Quotient. **If the Divisor is not a whole number, move the decimal over until it is. Move the decimal in the Dividend the same number of times.** Rule: 2 2.4 0.3 2.4

.2 2.88 4 1.6 .24 4.8 .002 .204

- Adding - Subtracting - Multiplying - Dividing REVIEW: HW: Adding, Subtracting, Multiplying, and Dividing Decimals Worksheet

3.4 + 2.1 ____ 0.6 + 21 ____ 34 + 3.1 ____ 4.6 + 2.001 _______ 10.4 + 2.1 ______

34 - 3.1 ____ 12.1 - 2.3 ____ 2 - 0.1 ____ 2.3 - 0.21 ______

14 x 2.1 ____ 4 x 0.1 ____ 0.12 x 0.1 ____

.2 2.88 3 3.3 1.4 0.42